By David Lawder NEW DELHI (Reuters) – U.S. Treasury Secretary Janet Yellen will tell India on Friday that ending Russia’s war in Ukraine is a “moral imperative,” but that economic challenges from the conflict and supply strains were drawing India and the United States closer together. In excerpts of remarks prepared for delivery at a Microsoft India research facility near New Delhi, Yellen lauded Prime Minister Narendra Modi’s recent sharper tone on the conflict after he avoided condemning Russia’s invasion for most of the year. “Prime Minister Modi was correct when he said that this ‘is not a…